b$-$ In the generalized eauation of state the ideal gas law is modified by inserting an adjustable coefficient term called hich accounts for the nonideality.

c$-$ According to Gibb's phase rule a mixture of liquid benzene, benzene vapor, and helium gas has how many number of degrees of freedom?

d$-$ Change in phase from solid to vapor is known as

e$-$ The $($critical$/$triple$)$ point of $C{O}_2$ is $($above$/$below$)1$atm, as a result $C{O}_2$ can sublime at atmospheric pressure.

f$-$ What is the density of propane gas $)=(44\frac{g}{m}ol$ in kilograms per cubic meter at $200$ kPa and $40C?($assume ideal gas$)$